MACA-APT: A MACA-based Adaptive Packet Train transmission protocol for Underwater Acoustic Networks

In wireless communications, collision is one of the principal sources
of energy wastage, which often makes collision avoidance strategies
preferred for medium access control (MAC) protocols. In
this paper, we propose a collision avoidance-based MAC protocol
called MACA-based Adaptive Packet Train (MACA-APT), which
has been designed specifically for underwater acoustic networks
(UANs). The design explicitly accounts for prominent characteristics
of UANs such as long propagation delays and typically high
bit error rates. In particular, the former is compensated via the
transmission of multiple consecutive packets to multiple different
receivers; the latter, instead, is tackled by embedding a cross-layer
Stop-&-Wait ARQ scheme within MACA-APT.
The performance of the proposed protocol is evaluated via simulations
and compared to another MAC protocol, also based on
MACA, showing that MACA-APT achieves better performance for
low to intermediate packet generation rates, and equivalent performance
at higher rates. Moreover, we assess the impact of the packet
train size on the performance of either protocol. This result is a
first step towards the design of adaptive multi-packet multi-receiver
MAC protocols for underwater networks.


Saiful Azad, Paolo Casari, Khandekar Tabin Hasan, Michele Zorzi

Published On:

WUWNET ’14 Proceedings of the International Conference on Underwater Networks & Systems

Publication Year: